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California will label Monsanto’s Roundup herbicide as a product that is “known to cause cancer.” California environment officials issued a notice of intent to change the label last week, making the state the first to require such a label for Roundup. The label change follows a move by the International Agency for Research on Cancer classifying glyphosate as “probably carcinogenic to humans” earlier this year. Glyphosate is the main ingredient in Roundup. Monsanto maintains that the product is safe to use.

A Baylor University Study concludes atrazine does not appear to have long-term, measurable impacts on aquatic plant life. Atrazine, a common herbicide used to control weeds in corn and sorghum crops, had caused “level of concern,” according to the EPA. The study’s lead investigator, Ryan King, said this research is the first to address atrazine levels as they would “naturally occur in agricultural areas during rainfall runoff events.” In an artificial stream facility designed to analyze runoff, King said the researchers found that atrazine had only temporary effects on more than a dozen different biological response variables.

That’s today’s Agribusiness Update from the Ag Information Network of the West.